AFNetworking-TastyPie adds additional authentication headers to talk to TastyPie endpoints. AFNetworking is used by RestKit to communicate with TastyPie REST APIs.
Example:
#import "AFNetworking+ApiKeyAuthentication.h"
// ...
RKObjectManager* sharedMgr = [ RKObjectManager sharedManager];
[sharedMgr.HTTPClient setAuthorizationHeaderWithTastyPieUsername:@"username" andToken:@"token-key-provided-by-TastyPie"];
// ...